package com.cskaoyan.order.biz.handler;

import com.cskaoyan.mall.commons.exception.BizException;
import com.cskaoyan.mall.commons.util.NumberUtils;
import com.cskaoyan.order.biz.callback.SendEmailCallback;
import com.cskaoyan.order.biz.callback.TransCallback;
import com.cskaoyan.order.biz.context.CreateOrderContext;
import com.cskaoyan.order.biz.context.TransHandlerContext;
import com.cskaoyan.order.constant.OrderConstants;
import com.cskaoyan.mall.order.constant.OrderRetCode;
import com.cskaoyan.order.dal.entitys.Order;
import com.cskaoyan.order.dal.entitys.OrderItem;
import com.cskaoyan.order.dal.persistence.OrderItemMapper;
import com.cskaoyan.order.dal.persistence.OrderMapper;
import com.cskaoyan.order.dto.CartProductDto;
import com.cskaoyan.order.utils.GlobalIdGeneratorUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.stereotype.Component;

import java.lang.reflect.Member;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * 初始化订单 生成订单
 */

@Slf4j
@Component
public class InitOrderHandler extends AbstractTransHandler {


    @Autowired
    SendEmailCallback sendEmailCallback;

    @Autowired
    OrderMapper orderMapper;

    @Autowired
    OrderItemMapper orderItemMapper;


    @Autowired
    GlobalIdGeneratorUtil globalIdGeneratorUtil;


    private final String ORDER_GLOBAL_ID_CACHE_KEY = "ORDER_ID";
    private final String ORDER_ITEM_GLOBAL_ID_CACHE_KEY = "ORDER_ITEM_ID";

    @Override
    public TransCallback getTransCallback() {
        return sendEmailCallback;
    }

    @Override
    public boolean isAsync() {
        return false;
    }

    @Override
    public boolean handle(TransHandlerContext context) {
        CreateOrderContext createOrderContext = (CreateOrderContext) context;

        // 插入订单表
        Order order = new Order();
        String orderId = globalIdGeneratorUtil.getNextSeq(ORDER_GLOBAL_ID_CACHE_KEY, 1);
        order.setOrderId(orderId);
        order.setBuyerNick(createOrderContext.getBuyerNickName());
        order.setPayment(createOrderContext.getOrderTotal());
        order.setCreateTime(new Date());
        order.setUpdateTime(new Date());
        order.setStatus(OrderConstants.ORDER_STATUS_INIT);
        order.setUserId(createOrderContext.getUserId());
        order.setBuyerNick(createOrderContext.getUserName());
        int rows = orderMapper.insert(order);
        if (rows < 1) {
            throw new BizException(OrderRetCode.INIT_ORDER_EXCEPTION.getCode(), OrderRetCode.INIT_ORDER_EXCEPTION.getMessage());
        }
        List<Long> buyProductIds = new ArrayList<>();
        // 插入订单商品关联表
        List<CartProductDto> cartProductDtoList = createOrderContext.getCartProductDtoList();
        for (CartProductDto cartProductDto : cartProductDtoList) {


            OrderItem orderItem = new OrderItem();
            String orderItemId = globalIdGeneratorUtil.getNextSeq(ORDER_ITEM_GLOBAL_ID_CACHE_KEY, 1);
            orderItem.setId(orderItemId);
            orderItem.setItemId(cartProductDto.getProductId());
            orderItem.setOrderId(orderId);
            orderItem.setNum(cartProductDto.getProductNum().intValue());
            orderItem.setPrice(cartProductDto.getSalePrice().doubleValue());
            orderItem.setTitle(cartProductDto.getProductName());
            orderItem.setPicPath(cartProductDto.getProductImg());
            BigDecimal totalFee = cartProductDto.getSalePrice().multiply(new BigDecimal(cartProductDto.getProductNum()));
            orderItem.setTotalFee(totalFee.doubleValue());
            // 已锁定库存
            orderItem.setStatus(1);

            buyProductIds.add(cartProductDto.getProductId());

            int affectedRows = orderItemMapper.insert(orderItem);
            if (affectedRows < 1) {
                throw new BizException(OrderRetCode.INIT_ORDER_EXCEPTION.getCode(), OrderRetCode.INIT_ORDER_EXCEPTION.getMessage());
            }

        }

        createOrderContext.setOrderId(orderId);
        createOrderContext.setBuyProductIds(buyProductIds);
        return true;
    }

}
